We recommend Torque Pro. What Does Code P0172 Mean? Your engine needs to put in the right amount of fuel for the amount of air coming into it, that is, the proper air-fuel ratio, to deliver the best power and fuel economy.. The four major parts of a vehicle are body and exterior (e.g. doors and windows), electrical and electronic (ignition system), interior (car seat), and powertrain and chassis (engine).. Completed this engine swap '06 fuzion motor to '05 6 with automatic transmission, so everything had to be swapped (crank pulley, crank sensor, timing cover, oil.

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